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induction heating power supplies
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in Power Supplies for Induction Heat Treating, Brazing, and Soldering
> Induction Heating and Heat Treatment
Published: 09 June 2014
Image
Published: 09 June 2014
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005838
EISBN: 978-1-62708-167-2
...-bridge inverters. Series resonant and parallel resonant circuits and their tuning calculations associated with output networks are also discussed. The article describes the frequency range of simultaneous dual-frequency induction heating power supply, and discusses the advantages, applications...
Abstract
This article provides a brief description of load conditions for single-shot heat treating, vertical scanning, and brazing and soldering. It discusses the various power components used in power supplies. These include capacitors, integrated power module, transformers, and various switching devices, namely, silicon-controlled rectifiers, insulated-gate bipolar transistors, and metal-oxide semiconductor field-effect transistors. The article also provides information on frequency-multiplication harmonic-induction power supplies, namely, push-pull and half-bridge inverters and full-bridge inverters. Series resonant and parallel resonant circuits and their tuning calculations associated with output networks are also discussed. The article describes the frequency range of simultaneous dual-frequency induction heating power supply, and discusses the advantages, applications, and technical background of independently controlled frequency and power (IFP) induction heating power supply. It concludes with a description of the developments in control systems for modern induction power supplies.
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005836
EISBN: 978-1-62708-167-2
... Abstract This article reviews the performance of power electronics components, namely, power rectifiers, insulated-gate bipolar transistors, metal-oxide semiconductor field-effect transistors, diodes, and silicon-controlled rectifiers. It provides information on induction heating power supplies...
Abstract
This article reviews the performance of power electronics components, namely, power rectifiers, insulated-gate bipolar transistors, metal-oxide semiconductor field-effect transistors, diodes, and silicon-controlled rectifiers. It provides information on induction heating power supplies with multiple heat stations, such as switching units and multiple (zone) outputs. The article describes power supply operational control and power supply protection circuits. It details duty cycle, power factor, and harmonics of power supplies. The article also describes system parameters, software analysis-calculations, human analysis-decisions, multiple system arrangements, and zone control systems for power supply selection. It provides information on the maintenance of induction power supplies, detailing the safety precautions to be taken and the need for routine inspection and servicing.
Image
in Fundamentals and General Aspects of Power Supply Design for Induction Heating, Heat Treating, Welding, and Melting
> Induction Heating and Heat Treatment
Published: 09 June 2014
Fig. 2 Induction bar end heating application: power supply, load matching components, induction coils, and work pieces to be heated
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Image
Published: 30 September 2014
Fig. 2 Induction heat treat power supply basic diagram. ac, alternating current; dc, direct current. Source: Ref 8
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in Power Supplies for Induction Heat Treating, Brazing, and Soldering
> Induction Heating and Heat Treatment
Published: 09 June 2014
Fig. 25 An independently controlled frequency and power (IFP) induction heating power supply under test. Courtesy of Radyne Corporation
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in Fundamentals and General Aspects of Power Supply Design for Induction Heating, Heat Treating, Welding, and Melting
> Induction Heating and Heat Treatment
Published: 09 June 2014
Fig. 12 A dc/dc converter, often called a buck converter, used in induction heating power supplies
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Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005851
EISBN: 978-1-62708-167-2
... Abstract Cooling towers are designed to remove heat from water in an induction system and dissipate it into the atmosphere. This article provides information on closed-loop recirculating water systems of an induction system to cool the power supply. It focuses on various types of cooling towers...
Abstract
Cooling towers are designed to remove heat from water in an induction system and dissipate it into the atmosphere. This article provides information on closed-loop recirculating water systems of an induction system to cool the power supply. It focuses on various types of cooling towers, namely, air-cooled heat exchangers, air-cooled heat exchangers with trim cooler, closed-circuit evaporative cooling towers, and open evaporative cooling towers. The article discusses the importance of their placement or positioning to reduce the chances of air recirculation, and concludes with a discussion on refrigerant chillers.
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005843
EISBN: 978-1-62708-167-2
... Abstract This article provides a discussion on transformers and reactors for induction heating. It presents information on the initial considerations in the selection process and the demands of power supply and load circuits. The article describes the types of transformers and reactors used...
Abstract
This article provides a discussion on transformers and reactors for induction heating. It presents information on the initial considerations in the selection process and the demands of power supply and load circuits. The article describes the types of transformers and reactors used in induction heating and maintenance operations. It also provides a discussion on load matching covering the following topics: initial considerations in the load-matching process, understanding the load circuit and the power supply circuit, selecting the desired operating point, adjusting the value of components, and testing the setup.
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005924
EISBN: 978-1-62708-166-5
... Abstract Induction heating has many different applications, such as melting, heating stock for forging, and heat treating. This article begins with a discussion on the types of power supplies, namely, solid-state power supplies and oscillator tubes. It provides information on system elements...
Abstract
Induction heating has many different applications, such as melting, heating stock for forging, and heat treating. This article begins with a discussion on the types of power supplies, namely, solid-state power supplies and oscillator tubes. It provides information on system elements, including cooling systems, power supplies, heat stations, work handling fixtures, induction or work coils, and quench systems. The article discusses the influence of system elements on induction heat treating system design. It also deals with the general theory, types, and applications of induction coils.
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005854
EISBN: 978-1-62708-167-2
... Abstract Induction heating system control is straightforward after the design and application of the coil and power supply required for the job. This article provides an overview of the basic components of an induction heating system, including a machine controller (computer or programmable...
Abstract
Induction heating system control is straightforward after the design and application of the coil and power supply required for the job. This article provides an overview of the basic components of an induction heating system, including a machine controller (computer or programmable logic controller), interface wiring, an operator interface, and safety controls. It also provides information on programming devices and temperature controllers, such as manual, auto, and auto-manual temperature controllers.
Book Chapter
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005834
EISBN: 978-1-62708-167-2
... dangerous to work and maintain compared with much-lower-voltage solid-state power supplies ( Ref 1 ). Applications of Induction Heating Induction heating finds its greatest application in the metals processing industries ( Ref 1 , 2 , 3 , 4 ). Primary uses fall into the major categories of heating...
Abstract
Electromagnetic induction is a way to heat electrically conductive materials such as metals. This article provides a brief history of electromagnetic induction and the development of induction heating technology. It explores various applications such as heating prior to metalworking, heat treating, melting, joining (welding, brazing/soldering, and shrink fitting), coating, paint curing, adhesive bonding, and zone refining of semiconductors. The article also discusses the advantages of induction heating.
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005196
EISBN: 978-1-62708-187-0
... Abstract This article describes the principles and classifications of induction furnaces. The classifications of induction furnaces are coreless and channel. The electromagnetic stirring action in these furnaces is reviewed. The article provides information on the various power supplies...
Abstract
This article describes the principles and classifications of induction furnaces. The classifications of induction furnaces are coreless and channel. The electromagnetic stirring action in these furnaces is reviewed. The article provides information on the various power supplies and water cooling systems for induction furnaces. Furnace operators can increase the power supply utilization by the use of mechanical skimmers. The article describes the various lining materials used in induction furnaces, namely, silica, alumina, and magnesia. The crucible wall scrapers, ramming mixes, and lining push-out device used in induction furnaces are also reviewed. The article concludes with a discussion on batch operation and tap-and-charge operation, two distinct ways of operating a coreless induction furnace.
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005856
EISBN: 978-1-62708-167-2
..., surface heating, and welding, in that the ultimate goal is to produce finished parts that meet all customer requirements, whether the customer is internal or external. Beginning with the right type and size power supply ( Fig. 1 ) and a well-designed induction coil, empirical testing is normally...
Abstract
This article focuses on the process design set-up procedure for brazing and soldering. It provides a detailed account of the types of base metals that can be joined by these processes, and reviews the factors to be considered to enhance the joint design. Criteria for selection of the right induction heating equipment to carry out the brazing or soldering operation are also provided. The article describes the types of brazing filler metals and joint designs. It also presents the types of inspection methods, namely, mechanical and visual, used to determine the quality of the brazed joint. Important considerations for the automation of induction-heated brazing applications are also discussed. The article concludes by emphasizing the need for documenting an in-control process which is a vitally important reference for questions or problems arising in the machine settings or part quality.
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005895
EISBN: 978-1-62708-167-2
... installations. channel induction furnaces crucible furnaces induction melting induction skull melting inductor crucible cold furnaces power supplies INDUCTION MELTING has been applied successfully in the ferrous and nonferrous industry for many decades. However, induction melting also is used...
Abstract
In the metal producing and processing industries, induction melting and holding has found wide acceptance. This article provides a detailed account of the physical principles of induction melting processes. It discusses the fundamental principles and components of induction furnaces such as induction crucible furnaces, channel induction furnaces, and induction furnaces with cold crucible. The article describes the advantages, applications, and fundamental principles of induction skull melting. It also provides information on the various specific application-designed induction melting installations.
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005888
EISBN: 978-1-62708-167-2
... to heat small-diameter workpieces. The power supply is the same in both cases. An example is given in Fig. 11 , which shows the relative variation of coil copper losses at the initial heating stage (20 to 70 °C, 70 to 160 °F) when induction heating 6.4 mm (0.25 in.) diameter titanium rod using...
Abstract
This article provides a rough estimate of the basic parameters, including coil efficiency, power, and frequency in induction heating of billets, rods, and bars. It focuses on the frequency selection for heating solid cylinders made of nonmagnetic metals, frequency selection when heating solid cylinders made from nonmagnetic alloys, and frequency selection when heating solid cylinders made from magnetic alloys. The article describes several design concepts that can be used for induction billet heating, namely, static heating and progressive/continuous heating. It presents the four major factors associated with the location and magnitude of subsurface overheating: frequency, refractory, final temperature, and power distribution along the heating line. The article summarizes the pros and cons of using a single power supply. It also reviews the design features of modular systems, and concludes with information on the temperature profile modeling software.
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001400
EISBN: 978-1-62708-173-3
... to be drawn from the power supply to achieve the desired heating of the part, possibly exceeding the power capacity of the generator. Joints between dissimilar metals further lessen optimum coupling and diminish efficiency. Although induction heating may require some trial-and-error efforts to optimize...
Abstract
This article describes resistivity effects and Curie temperature effects on coupling efficiency during induction heating in the soldering operation. It discusses the effects of workpiece geometry during the induction heating. The practices associated with the use of preplaced solder are reviewed. The article provides useful information on setup parameters and safety concerns for the use of induction heating.
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005839
EISBN: 978-1-62708-167-2
... into the induction machine Have electrical parameters that match the induction power supply Deliver quench Have a satisfactory lifetime Have satisfactory efficiency Be repeatable from inductor to inductor In developing a new induction heat treating coil and process, the first question is whether...
Abstract
This article provides information on single-shot and scanning, the two types of induction heat treating processes that are based on whether the induction coil is moving relative to the part during the heating process. It describes the effect of the frequency of induction heating current on the induction coil and process design, and the control of heating in different areas of the inductor part. The article reviews three main tools for adjustment of coil design and fabrication: coupling gap, coil copper profile, and magnetic flux controllers. It examines the method of holding a part and presenting it to the inductor during the initial inductor design. The article provides information on coil leads/busswork and contacts that mechanically and electrically connect the induction coil head to the power supply. It concludes with a discussion on flux and oxide removal, leak and flow checking, silver plating, and electrical parameter measurement.
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005899
EISBN: 978-1-62708-167-2
... Abstract This article provides a detailed discussion on the components of a high-performance induction crucible furnace system, namely, furnace body, power supply, and peripheral components. The furnace body contains refractory lining, coil and transformer yokes, and tilting frame and furnace...
Abstract
This article provides a detailed discussion on the components of a high-performance induction crucible furnace system, namely, furnace body, power supply, and peripheral components. The furnace body contains refractory lining, coil and transformer yokes, and tilting frame and furnace cover. The power supply consists of the following: transformers, frequency converters, capacitor banks, and power cables and furnace coils. The peripheral components comprise recooling device, charging system, and skimming devices. The article also presents a three-dimensional representation of the induction crucible furnace system.
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